diff options
Diffstat (limited to 'test/scudo/rss.c')
| -rw-r--r-- | test/scudo/rss.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/test/scudo/rss.c b/test/scudo/rss.c new file mode 100644 index 0000000000000..4376290ad0cd6 --- /dev/null +++ b/test/scudo/rss.c @@ -0,0 +1,56 @@ +// RUN: %clang_scudo %s -o %t +// RUN: %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-nolimit +// RUN: %env_scudo_opts="soft_rss_limit_mb=256" %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-nolimit +// RUN: %env_scudo_opts="hard_rss_limit_mb=256" %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-nolimit +// RUN: %env_scudo_opts="soft_rss_limit_mb=64:allocator_may_return_null=0" not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-softlimit +// RUN: %env_scudo_opts="soft_rss_limit_mb=64:allocator_may_return_null=1" %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-softlimit-returnnull +// RUN: %env_scudo_opts="soft_rss_limit_mb=64:allocator_may_return_null=0:can_use_proc_maps_statm=0" not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-softlimit +// RUN: %env_scudo_opts="soft_rss_limit_mb=64:allocator_may_return_null=1:can_use_proc_maps_statm=0" %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-softlimit-returnnull +// RUN: %env_scudo_opts="hard_rss_limit_mb=64:allocator_may_return_null=0" not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-hardlimit +// RUN: %env_scudo_opts="hard_rss_limit_mb=64:allocator_may_return_null=1" not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-hardlimit +// RUN: %env_scudo_opts="hard_rss_limit_mb=64:allocator_may_return_null=0:can_use_proc_maps_statm=0" not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-hardlimit +// RUN: %env_scudo_opts="hard_rss_limit_mb=64:allocator_may_return_null=1:can_use_proc_maps_statm=0" not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-hardlimit + +// Tests that the soft and hard RSS limits work as intended. Without limit or +// with a high limit, the test should pass without any malloc returning NULL or +// the program dying. +// If a limit is specified, it should return some NULL or die depending on +// allocator_may_return_null. This should also work without statm. + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +static const size_t kNumAllocs = 128; +static const size_t kAllocSize = 1 << 20; // 1MB. + +static void *allocs[kNumAllocs]; + +int main(int argc, char *argv[]) { + int returned_null = 0; + for (int i = 0; i < kNumAllocs; i++) { + if ((i & 0xf) == 0) + usleep(50000); + allocs[i] = malloc(kAllocSize); + if (allocs[i]) + memset(allocs[i], 0xff, kAllocSize); // Dirty the pages. + else + returned_null++; + } + for (int i = 0; i < kNumAllocs; i++) + free(allocs[i]); + if (returned_null == 0) + printf("All malloc calls succeeded\n"); + else + printf("%d malloc calls returned NULL\n", returned_null); + return 0; +} + +// CHECK-nolimit: All malloc calls succeeded +// CHECK-softlimit: soft RSS limit exhausted +// CHECK-softlimit-NOT: malloc calls +// CHECK-softlimit-returnnull: soft RSS limit exhausted +// CHECK-softlimit-returnnull: malloc calls returned NULL +// CHECK-hardlimit: hard RSS limit exhausted +// CHECK-hardlimit-NOT: malloc calls |